Title :
Accurate and simple modeling of amplifier dc gain nonlinearity in switched-capacitor circuits
Author :
Yavari, Mohammad ; Rodriguez-Vazquez, Angel
Author_Institution :
Electr. Eng. Dept., Amirkabir Univ. of Technol., Tehran
Abstract :
This paper presents an accurate and simple model for dc gain nonlinearity of operational amplifiers used in the switched-capacitor circuits such as the sigma-delta modulators. The proposed model can simply be used in the time-domain system level simulation of sigma-delta modulators to evaluate the effect of amplifier´s dc gain nonlinearity on the overall linearity of the modulator as well as in the other switched- capacitor circuits as explored in the paper.
Keywords :
operational amplifiers; switched capacitor networks; amplifier DC gain nonlinearity; operational amplifier; sigma-delta modulator; switched-capacitor circuit; time-domain system; Circuit simulation; Delta-sigma modulation; MOSFETs; Operational amplifiers; Performance gain; Switched capacitor circuits; Switching circuits; Switching converters; Time domain analysis; Voltage;
Conference_Titel :
Circuit Theory and Design, 2007. ECCTD 2007. 18th European Conference on
Conference_Location :
Seville
Print_ISBN :
978-1-4244-1341-6
Electronic_ISBN :
978-1-4244-1342-3
DOI :
10.1109/ECCTD.2007.4529557
